Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 171, NWS Jackson, MS

May 25, 20114 counties in Mississippi

NWS Jackson, MS issued this tornado warning at May 25, 2011, 9:52 PM CDT for 4 counties in Mississippi. It was in force for 23 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 25, 2011, 9:52 PM CDT (02:52 UTC)
Expired: May 25, 2011, 10:15 PM CDT
In force: 23 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Holmes County, MS, Humphreys County, MS, Leflore County, MS, Sunflower County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 132 km from the middle of the area, began a volume at 02:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 25, 9:53 PM CDT	TSTM WND DMG	2 N Greenwood, MS	SEVERAL TREES DOWN ALONG CR 518.
May 25, 9:53 PM CDT	TSTM WND DMG	Itta Bena, MS	POWER OUTAGES WERE REPORTED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 25, 9:43 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.9 hours before the alert went out and 126 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1200 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 2164 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

152 
WFUS54 KJAN 260252
TORJAN
MSC051-053-083-133-260315-
/O.NEW.KJAN.TO.W.0171.110526T0252Z-110526T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
952 PM CDT WED MAY 25 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME NORTHWESTERN HOLMES COUNTY IN CENTRAL MISSISSIPPI...
  EXTREME NORTH CENTRAL HUMPHREYS COUNTY IN CENTRAL MISSISSIPPI...
  SOUTHERN LEFLORE COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...ITTA BENA...GREENWOOD...
  SOUTHERN SUNFLOWER COUNTY IN NORTHWEST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...MOORHEAD...INDIANOLA...

* UNTIL 1015 PM CDT

* AT 952 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR INVERNESS
  MOVING EAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO QUITO
  AND SIDON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE PROTECTIVE ACTION
NOW.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING HAIL 
AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH!

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM CDT THURSDAY MORNING
FOR NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3357 9009 3347 9009 3346 9013 3342 9013
      3342 9017 3338 9017 3328 9061 3328 9070
      3343 9074 3362 9011
TIME...MOT...LOC 0252Z 252DEG 43KT 3338 9060

$$

BYB

2 follow-up statements

025 
WWUS54 KJAN 260306
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1006 PM CDT WED MAY 25 2011

MSC053-133-260316-
/O.CAN.KJAN.TO.W.0171.000000T0000Z-110526T0315Z/
SUNFLOWER MS-HUMPHREYS MS-
1006 PM CDT WED MAY 25 2011

...THE TORNADO WARNING FOR EXTREME NORTH CENTRAL HUMPHREYS AND
SOUTHERN SUNFLOWER COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM CDT THURSDAY MORNING
FOR NORTHEAST LOUISIANA AND MISSISSIPPI.

LAT...LON 3362 9011 3357 9009 3347 9010 3346 9013
      3342 9013 3342 9017 3338 9017 3332 9045
      3351 9045
TIME...MOT...LOC 0306Z 255DEG 50KT 3342 9035

$$

MSC051-083-260315-
/O.CON.KJAN.TO.W.0171.000000T0000Z-110526T0315Z/
LEFLORE MS-HOLMES MS-
1006 PM CDT WED MAY 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR EXTREME
NORTHWESTERN HOLMES AND SOUTHERN LEFLORE COUNTIES...

AT 1006 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO
TRACK A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS LOCATED NEAR MORGAN CITY MOVING EAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ITTA
BENA...QUITO...SIDON AND GREENWOOD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE PROTECTIVE ACTION
NOW.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER TO PING PONG SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS 
IN EXCESS OF 70 MPH!

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM CDT THURSDAY MORNING
FOR NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3362 9011 3357 9009 3347 9010 3346 9013
      3342 9013 3342 9017 3338 9017 3332 9045
      3351 9045
TIME...MOT...LOC 0306Z 255DEG 50KT 3342 9035

$$

BYB

526 
WWUS54 KJAN 260316
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1016 PM CDT WED MAY 25 2011

MSC051-083-260326-
/O.EXP.KJAN.TO.W.0171.000000T0000Z-110526T0315Z/
LEFLORE MS-HOLMES MS-
1016 PM CDT WED MAY 25 2011

...THE TORNADO WARNING FOR EXTREME NORTHWESTERN HOLMES AND SOUTHERN
LEFLORE COUNTIES HAS EXPIRED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS WEAKENED AND THE
WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM CDT THURSDAY MORNING
FOR NORTHEAST LOUISIANA AND MISSISSIPPI.

LAT...LON 3362 9011 3357 9009 3347 9010 3346 9013
      3342 9013 3342 9017 3338 9017 3332 9045
      3351 9045
TIME...MOT...LOC 0306Z 255DEG 50KT 3342 9035

$$

BYB

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 7:06 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	54 min
May 25, 7:14 PM CDT	Tornado Warning	JAN	Bolivar	61 min
May 25, 7:38 PM CDT	Tornado Warning	JAN	Bolivar, Sunflower	52 min
May 25, 8:14 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Washington	61 min
May 25, 8:29 PM CDT	Tornado Warning	JAN	Bolivar, Sunflower	28 min
May 25, 8:45 PM CDT	Severe Thunderstorm Warning	JAN	Leflore, Sunflower	60 min
May 25, 8:55 PM CDT	Tornado Warning	JAN	Washington	51 min
May 25, 9:00 PM CDT	Tornado Warning	JAN	Bolivar, Sunflower	32 min
May 25, 9:07 PM CDT	Severe Thunderstorm Warning	JAN	Grenada	53 min
May 25, 9:27 PM CDT	Flash Flood Warning	JAN	Bolivar, Sunflower, Washington	60 min
May 25, 9:36 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery, Sunflower	54 min
May 25, 9:45 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Washington	21 min
May 25, 9:53 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Washington	22 min
May 25, 10:02 PM CDT	Flash Flood Warning	JAN	Grenada	79 min
May 25, 10:09 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Choctaw, Clay, Montgomery, Oktibbeha, Webster	66 min
May 25, 10:18 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Leflore, Sunflower	42 min
May 25, 10:21 PM CDT	Tornado Warning	JAN	Carroll	24 min
May 25, 11:26 PM CDT	Special Weather Statement	JAN	Clay, Lowndes, Noxubee, Oktibbeha	59 min
May 26, 12:32 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Montgomery	43 min
May 26, 12:37 AM CDT	Special Weather Statement	JAN	Oktibbeha	18 min
May 26, 12:56 AM CDT	Special Weather Statement	JAN	Lowndes, Oktibbeha	29 min
May 26, 1:44 AM CDT	Special Weather Statement	JAN	Leflore	31 min
May 26, 2:01 AM CDT	Special Weather Statement	JAN	Lowndes	34 min
May 26, 2:19 AM CDT	Special Weather Statement	JAN	Lowndes	31 min
May 26, 2:46 AM CDT	Special Weather Statement	JAN	Grenada	29 min
May 26, 4:29 AM CDT	Special Weather Statement	JAN	Forrest, Lamar	41 min
May 26, 11:45 AM CDT	Special Weather Statement	JAN	Lamar	60 min
May 26, 11:50 AM CDT	Special Weather Statement	JAN	Jones	45 min
May 26, 12:01 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	32 min
May 26, 12:08 PM CDT	Special Weather Statement	JAN	Simpson, Smith	32 min
May 26, 12:32 PM CDT	Special Weather Statement	JAN	Jones	28 min
May 26, 12:55 PM CDT	Special Weather Statement	JAN	Forrest, Lamar	60 min
May 26, 1:13 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar, Marion	47 min
May 26, 1:18 PM CDT	Tornado Warning	JAN	Forrest, Lamar	46 min
May 26, 1:50 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	40 min
May 26, 1:54 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	51 min
May 26, 2:01 PM CDT	Special Weather Statement	JAN	Jones	59 min
May 26, 2:07 PM CDT	Special Weather Statement	JAN	Lamar	28 min
May 26, 2:15 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	45 min
May 26, 2:34 PM CDT	Special Weather Statement	JAN	Forrest, Lamar, Marion	61 min
May 26, 3:47 PM CDT	Special Weather Statement	JAN	Kemper	28 min
May 26, 4:21 PM CDT	Special Weather Statement	JAN	Lamar	44 min
May 26, 4:31 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	44 min
May 26, 6:17 PM CDT	Special Weather Statement	JAN	Forrest	43 min
May 26, 6:31 PM CDT	Special Weather Statement	JAN	Jones	29 min

Nearby

Tornado Warnings in Mississippi, 2011 Every tornado warning in 2011 Tornadoes in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.